194 lines
6 KiB
C
194 lines
6 KiB
C
/*--------------------------------------------------------------------------*\
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CONNECT.C Version 1.1 1995 AVM
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Functions concerning activation and deactivation of connections
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\*--------------------------------------------------------------------------*/
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#include <stdio.h>
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#include <malloc.h>
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#include <assert.h>
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#include <sys/time.h>
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#include <linux/capi.h>
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#include <capi20.h>
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#include "contr.h"
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#include "init.h"
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#include "connect.h"
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/* Function Pointers for Callback-Functions */
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MainStateChange_t MainStateChange_p = 0L;
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MainIncomingCall_t MainIncomingCall_p = 0L;
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/*
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* Listen: send a LISTEN_REQ
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* parameters: CIPmask (which services shall be accepted) (see CAPI 2.0 spec.)
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* Listen will be sent to the number of controllers specified in InitISDN.
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* Listen with CIPmask = 0 results in getting no incoming calls signaled
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* by CAPI.
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*/
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unsigned Listen(unsigned long CIPmask) {
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MESSAGE_EXCHANGE_ERROR error;
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_cmsg CMSG;
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unsigned Controller;
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unsigned numController;
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/* send listen to all controllers */
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numController = GetNumController();
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for (Controller=1; Controller<=numController; Controller++) {
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LISTEN_REQ_HEADER(&CMSG, Appl_Id, 0, Controller);
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LISTEN_REQ_CIPMASK(&CMSG) = CIPmask;
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if ((error = CAPI_PUT_CMSG(&CMSG)) != 0)
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return error;
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}
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return 0;
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}
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/*
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* all capi functions can also be called with all possible parameters specified
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* direct in the function, e.g.
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*
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* error = CONNECT_REQ(&CMSG, Appl_Id, 0,
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* Controller, CIPValue,
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* CalledPartyNumber, CallingPartyNumber,
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* CalledPartySubaddress, CallingPartySubaddress,
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* B1Protokoll, B2Protokoll, B3Protokoll,
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* B1Configuration, B2Configuration, B3Configuration,
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* BC, LLC, HLC,
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* NULL, NULL, NULL, NULL);
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*/
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/*
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* Connect: try's to connect to 'CalledPartyNumber'
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* the return value of CAPI_PUT_CMSG is the same as CAPI_PUT_MESSAGE
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* (defined in CAPI 2.0 spec. error class 0x11xx )
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* If CallingPartyNumber is not needed, set to NULL.
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* CallingPartyNumber & CalledPartyNumber have to be zero terminated strings.
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* For datatransmission set the protocols to zero, B3Configuration to NULL
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*/
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unsigned Connect(ConnectionID *Connection, char *CalledPartyNumber, char *CallingPartyNumber,
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unsigned long Service, unsigned short B1Protocol, unsigned short B2Protocol,
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unsigned short B3Protocol, unsigned char *B3Configuration) {
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_cmsg CMSG;
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MESSAGE_EXCHANGE_ERROR error;
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long Controller;
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unsigned short CIPValue;
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assert (*Connection == INVALID_CONNECTION_ID);
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Controller = GetFreeController();
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if (Controller == INVAL_CONTROLLER) {
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/* if no available controller use the first one for correct
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* error signaling
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*/
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Controller = 1;
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}
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*Connection = AllocConnection();
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if (*Connection == INVALID_CONNECTION_ID) {
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fprintf(stderr, "Connect: No available connection identifiers.\n");
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/* no OS resources */
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return 0x1108;
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}
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/* use ConnectionIdentifier as Messagenumber */
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CONNECT_REQ_HEADER(&CMSG, Appl_Id, (unsigned short)*Connection, Controller);
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/* build up service mask */
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CIPValue = 0;
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if (Service != 0) {
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do {
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if (Service & 1)
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break;
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Service >>= 1;
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CIPValue++;
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} while (CIPValue < 31);
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}
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CONNECT_REQ_CIPVALUE(&CMSG) = CIPValue;
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SetCalledPartyNumber (*Connection, CalledPartyNumber);
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SetCallingPartyNumber (*Connection, CallingPartyNumber);
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CONNECT_REQ_CALLEDPARTYNUMBER(&CMSG) = GetCalledPartyNumberStruct(*Connection);
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CONNECT_REQ_CALLINGPARTYNUMBER(&CMSG) = GetCallingPartyNumberStruct(*Connection);
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CONNECT_REQ_B1PROTOCOL(&CMSG) = B1Protocol;
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CONNECT_REQ_B2PROTOCOL(&CMSG) = B2Protocol;
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CONNECT_REQ_B3PROTOCOL(&CMSG) = B3Protocol;
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CONNECT_REQ_B3CONFIGURATION(&CMSG) = B3Configuration;
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error = CAPI_PUT_CMSG(&CMSG);
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if (error != 0) {
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FreeConnection (*Connection);
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*Connection = INVALID_CONNECTION_ID;
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fprintf(stderr, "Connect: error in CAPI_PUT_MESSAGE\n");
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}
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return error;
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}
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/*
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* Disconnect: disconnects one channel
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* The ConnectionID must be valid
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*/
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unsigned Disconnect(ConnectionID Connection) {
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_cmsg CMSG;
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MESSAGE_EXCHANGE_ERROR error;
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assert (Connection != INVALID_CONNECTION_ID);
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switch (GetState(Connection)) {
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case Connected:
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case B_ConnectPending:
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SetConnectionInitiator (Connection, TRUE);
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DISCONNECT_B3_REQ_HEADER(&CMSG, Appl_Id, 0, GetConnectionNCCI (Connection));
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error = CAPI_PUT_CMSG(&CMSG);
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break;
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case D_Connected:
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case D_ConnectPending:
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case B_DisconnectPending:
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SetConnectionInitiator (Connection, TRUE);
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DISCONNECT_REQ_HEADER(&CMSG, Appl_Id, 0, GetConnectionPLCI (Connection));
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error = CAPI_PUT_CMSG(&CMSG);
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break;
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default:
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error = 0;
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break;
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}
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return error;
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}
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/*
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* IncomingCall: signals an incoming call
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* This function will be executed if a CONNECT_INDication appears to
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* inform the user. This function is implemented in the main program
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*/
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void IncomingCall(ConnectionID Connection, char *CallingPartyNumber) {
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if (MainIncomingCall_p)
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MainIncomingCall_p(Connection, CallingPartyNumber);
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}
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/*
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* AnswerCall: answers incoming call with the specified reject-value
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* (some reject-values are defined in the req.h file)
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* (for more see CAPI 2.0 spec.)
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*/
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unsigned AnswerCall(ConnectionID Connection, RejectValue Reject, unsigned short B1Protocol,
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unsigned short B2Protocol, unsigned short B3Protocol, unsigned char *B3Configuration) {
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_cmsg CMSG;
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assert (Connection != INVALID_CONNECTION_ID);
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CONNECT_RESP_HEADER(&CMSG, Appl_Id, 0, GetConnectionPLCI (Connection));
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CONNECT_RESP_REJECT(&CMSG) = (unsigned short)Reject;
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CONNECT_REQ_B1PROTOCOL(&CMSG) = B1Protocol;
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CONNECT_REQ_B2PROTOCOL(&CMSG) = B2Protocol;
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CONNECT_REQ_B3PROTOCOL(&CMSG) = B3Protocol;
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CONNECT_REQ_B3CONFIGURATION(&CMSG) = B3Configuration;
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return CAPI_PUT_CMSG(&CMSG);
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}
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/*
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* StateChange: signals a state change on both B-channels (connected, disconnected)
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* Whenever a channel changes his state this function is called
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* This function is implemented in the main program
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*/
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void StateChange(ConnectionID Connection, ConnectionState State) {
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if (MainStateChange_p)
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MainStateChange_p(Connection, State);
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}
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